rt-thread-official/components/libc/posix/io/mman/sys/mman.h

/*
 * Copyright (c) 2006-2021, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2017/11/30     Bernard      The first version.
 */

#ifndef __SYS_MMAN_H__
#define __SYS_MMAN_H__

#ifdef __cplusplus
extern "C" {
#endif

#include <sys/types.h>

#define MAP_FAILED     ((void *) -1)

#define MAP_SHARED     0x01
#define MAP_PRIVATE    0x02
#define MAP_TYPE       0x0f
#define MAP_FIXED      0x10
#define MAP_ANON       0x20
#define MAP_ANONYMOUS  MAP_ANON
#define MAP_NORESERVE  0x4000
#define MAP_GROWSDOWN  0x0100
#define MAP_DENYWRITE  0x0800
#define MAP_EXECUTABLE 0x1000
#define MAP_LOCKED     0x2000
#define MAP_POPULATE   0x8000
#define MAP_NONBLOCK   0x10000
#define MAP_STACK      0x20000
#define MAP_HUGETLB    0x40000
#define MAP_FILE       0

#define PROT_NONE      0
#define PROT_READ      1
#define PROT_WRITE     2
#define PROT_EXEC      4
#define PROT_GROWSDOWN 0x01000000
#define PROT_GROWSUP   0x02000000

#define MS_ASYNC       1
#define MS_INVALIDATE  2
#define MS_SYNC        4

#define MCL_CURRENT    1
#define MCL_FUTURE     2
#define MCL_ONFAULT    4

void *mmap (void *start, size_t len, int prot, int flags, int fd, off_t off);
int munmap (void *start, size_t len);

#ifdef __cplusplus
}
#endif
#endif